A206214 Number of (n+1)X8 0..2 arrays with every 2X3 or 3X2 subblock having exactly two equal edges, and new values 0..2 introduced in row major order

34236, 27656, 40032, 274320, 1435584, 9438912, 68074272, 366583680, 2427719040, 17541854784, 94578589440, 626351512320, 4525798534272, 24401276075520, 161598690178560, 1167656021842176, 6295529227484160, 41692462066068480

Offset

1,1

Comments

Column 7 of A206215

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Formula

Empirical: a(n) = 258*a(n-3) for n>10

Example

Some solutions for n=4
..0..1..0..2..1..1..2..1....0..1..0..0..1..2..1..2....0..1..1..2..0..0..1..0
..1..1..0..0..2..1..1..2....1..0..0..1..2..2..1..1....1..1..2..0..0..1..0..0
..2..2..1..0..0..2..1..1....0..0..1..2..2..0..2..2....1..2..0..0..1..0..0..1
..0..2..2..1..0..0..2..1....0..1..2..2..0..2..2..0....2..0..0..1..0..0..1..0
..1..0..2..2..1..0..0..2....1..2..2..1..2..2..0..2....0..0..2..0..0..1..0..0

Crossrefs

Sequence in context: A227699 A234820 A182292 * A227487 A204411 A238927

Adjacent sequences: A206211 A206212 A206213 * A206215 A206216 A206217

Keyword

nonn

Author

R. H. Hardin Feb 04 2012

Status

approved